According to the Adv. Chart, I can reraise MP3 with Jacks on the BB. But there are several other factors that should be considered:
CO Shoves for 10bb but his stats are not really daunting to be backed off.
UTG+1 limped all before this action-re-action situation, can I expect him to coldcall/fold or raise again?

Can I Shove it here with Jacks? I think it's quite marginal since more players = less % winning chances , especially with Jacks.
I do not want to see 12 cards out of the 50 card deck
(12/50)x(12/49)x(12/48) etc. = 120% = a Big chance that I see one overcard.

I wouldn't be afraid of CO and MP3 is just a normal raise, so I'd push JJ here. Also the UTG+1 limp means nothing special really, his VPIP is rather high.
Also if they both have overcards, for example they have AK and AQ, chance of hitting the Ace is smaller already.